Weighing-scale.



M. A. DUQUETTE. WEIGHING SCALE. APPLICATION FILED MAY 1a, 1906.

Patented Sept. 9, 1913.

UNITED STATES PATENT OFFTCE.

.MAXIM A. DUQUETTE, OF TOLEDO, OHIO, ASSIGNOR T0 TOLEDO SCALE COMPANY, OF

TOLEDO, OHIO, A CORPORATION OF NEW JERSEY.

WEIGHING-SCALE.

Specification ofLetters Patent.

Patented Sept. 9,1913.

Application filed May 18, 1906. Serial No. 317,490.

To all whom it may concern:

Be it known that I, MAXIM A. DUQUE'ITE, a citizen of the United States, residing at Toledo, in the county of Lucas and State of Ohio, have invented certain new and useful Improvements in Weighing-Scales, of which the following is a specification.

The present invention relates to weighing scalesfof the pendulum type, such, for example, as disclosed in De Vilbiss Reissue Patent No. 12,029, dated September 9,1902, and, while not necessarily confined-tocomputing scales, is nevertheless primarily intended for employment 'therein. In such scales it is customary to vary theweighing and computing capacity by changing the load on the pendulum and this is commonly accomplished by placing an additional Weight or ball as it is called upon the pendulum so as to increase the counter-balancing efiect thereof. I? 11 The principal object of the invention is to facilitate the removing and replacementof suchan auxiliary weightand to insure its taking up and maintaining its'proper position upon the pendulum. f More specifically stated, theobject of the invention is to improve the formation of the permanent pendulum weightand of the auxiliary removableweight so as to assist in the placing of the latter in its proper relation to the permanent weight and to insure against any possible shifting of the auxiliary weight such as might disturb the proper operations of the pendulum when augmented as to counter-balancing effect.

With the above stated and incidental objects in view, the invention consists in certain novel fea ures and combinations of parts, the "essential elements whereof are recited in the appended claims and a preferred form of embodiment of which is described in detail trated in the accompanying drawings forming part of this specification.

Of said drawings, Figure 1 represents in front elevation computing scales of the pendulum type having the present invention embodied therein; Fig. 2 represents the permanent and removable pendulum weights in section associated together; Fig. 3 represents the lower end of the pendulum in side elevation without the auxiliary weight, and Fig. 4 represents the auxiliary weight or ball in perspective.

' 6. The fulcrum of said index arm hereinafter and fully illus- Reference may be had to the aforesaid De Vilbiss patent for a detailed description of the construction and mode of operation of the particular type of computing weighing scales to which the invention is shown as applied in the present instance. mention in the present case of certain of the characteristic features of this type of weighing scales will suffice.

3 The reference numeral 1 designates a suitable supporting base above which is fulcrumed on a suitable standard a scale beam 2 supporting a scale pan 3 and connected within a suitable housing 4 with an index arm 5, which works over a computing chart I 5 is coincident with the fulcrum of the pendulum, which comprises a rod or stem 7 and a per manent weight secured thereto and taking the form of a disk 8. This disk has a radial slot or opening 9 entering one side and ex tending around the center of the disk concentric therewith, as shown at 10. The portion of the disk immediately surrounding the said radial opening is substantially V- shaped in cross section or edge view, as shown at 11 in Figs. 1 and 2, although its formation is not-continued to a sharp edge but terminates in a narrow, flat surface 12. As the pendulum hangs normally in vertical position, the radial slot or opening 9 extends on an upward inclination as illustrated in Fig. 3, the purpose of which will presently become apparent.

The auxiliary weight or ball takes much the form of a dumb-bell, comprising a reduced central portion 13 of substantially the same lateral extent as the flat surface 12 of the permanent weight and two side portions 14 in the form of truncated cones whose angles correspond with those of the V-shaped portions of the permanent weight,

as clearly shown in Fig. 2. Beyond these side portions 14 the auxiliary weight is formed with annular flanges 15 designed to take over the sides of the permanent weight beyond the V-shaped portions thereof.

It will now be seen that the above de scribed formations of the-permanent and auxiliary weights are calculated to insure a perfectly accurate and correct engagement between them and one which cannot readily be disturbed when once established. The diameter of the central portion 13 of the auxiliary weight coincides substantially Brief" with the width of the radial slot or opening 9 in the permanent weight, and the semicircular inner end of said radial slot or opening provides a seat for the central portion 13 of the auxiliary weight. It will be seen that the V-shaped characteristic of the permanent weight and the conical formation extent of the latter and hence perfect cooperation is insured between the. permanent and auxiliary weights in denoting the weight of an article or commodity ingthe sqale pan.

It will be seen that theabovedescribed construction provides for removingand rev placing the auxiliary weight with great facility and that it is well calculated to thori; .oughly fulfill the object primarily stated.

The construction is, however, susceptible of modification without departing- .frOm the spirit and scope of the invention as the same i is set forth in the following claims.

What is claimed is: 1 I

1. In weighing scales, the-combination of a pendulum having a permanent weight, and

a removable weight adapted to engage said. permanent weight with the :centers of mass.

of the two weights substantiallyjcoinciding. 2. In weighing scales, thecombination of a pendulum having a permanentweight,

with an opening in one edge thereof, and a removable weight adapted to seat in said opening.

In weighing scales, the combination of a pendulum having a permanent weight, with a radial opening embracing its center, and a removable weight adapted to seat in said opening.

In weighing scales, the combination of a pendulum having a permanent weight, with an inclined radial opening and a removable. weight adapted to seat in said opening.

5. In weighing scales, the combination of a pendulum having a permanent weight,

with an inclined radial opening embracing.

its center, and a removable weight adapted to seat in said opening.

(i. The combination with the-pendulum of weighing scales having a permanent weight with a lateral opening having walls substantially V-shaped in cross-section, of a removable weight having a reduced central portion to enter said opening of the permanent weight and seat in the end thereof,

l ine sh sw es a pendulum hay-in a permanent weight and said removable weight flaring at opposite sides of said reduced central portion to conform with the V-shaped cross-section of the permanent weight.

7'. In weighing scales, the combination of a pendulum having a permanent weight of disk-form and formed with a radial opening whose boundary walls are substantially V- shaped in cross-section, and a removable weight of doubleconical formation.

8. In weighing scales, the combination of .a pendulum having a permanent weight of disk-form and formed with a radial opening whose boundary walls are, substantially V- shaped in cross-section but terminates in a flattened surface, and a removable weight ofdouble frusto-conical formation having a central. portion substantially coinciding in length with thewidth of the said flattened surfaceof the erina'nent-weight. athe combination of .a removable ',.weig t constructed to engage .with their horizontal axes substantially coinciding with their engaging surfaces so tapered respect to'said horizontal axis that the removable weight may adjust itself laterally after initial engagement with said permanent weight and while acquiring its final position. i

,10, In weighing scales, the combination of I iag pend ulum hav ng a permanent weight,

with an openin n one edgethereof, and a removable weii 't adapted to seat in said opening and ta e over the sides thereof.

; "11. Inweighing scale -the combination of a pendulum having a permanent weight, with a radial opening embracing its center, and a removable weight adapted to seat in said opening and take over the sides thereof.

12. In weighing scales, the combination of a pendulum having a permanentweight, with an inclined radial opening and a removable weight adapted to seat in said opening and take over the sides thereof.

13. In weighing scales, the combination of a pendulum having a permanent weight, with an inclined radial opening embracing its center, and a removable weight adapted to seat in said opening and take over the sides thereof.

14. In weighing scales, the combination of a pendulum having a permanent weight of disk-form and formed with a radial opening whose boundary walls are substantially V- shaped in cross-section, and a removable weight of double conical formation to engage said radial opening with flanges to take over the sides of the permanent weight.

15. In-weighing scales, the combination of a pendulum having a permanent weight of disk-form formed with a radial opening whose boundary walls are substantially V- shaped in cross-section butterminates in a flattened surface, and a removable weight of double frusto-conical formation having a central portion substantially coinciding in length with the Width of the said flattened surface of the permanent Weight and annular flanges to take over the sides thereof.

16. In Weighing scales, the combination of a pendulum comprising a permanent weight having an open-ended slot extending through its center and a removable weight Whose center of mass and geometrical center 10 substantially coincide, formed and adapted to be received in said Open-ended slot With its center of gravity coinciding with the center of the permanent Weight.

MAXIM A. DUQUETTE. Witnesses H. G. CRAWFORD, H. S. BERGEN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

